py21cmcast 1.0.2

Fisher forecasts with 21cm experiments

21cmCAST

This package provides tools to perform Fisher foreCASTs from 21cmFAST outputs. It has been built on / complementarily to the 21cmFish package[^1]. A detailed example of how it works can be found in scripts/exec/fisher.ipynb.

In order to work properly, the codes requires to have a working installation of

• 21cmFAST[^2][^3]
• 21cmSense[^4]

If you are considering using this code, please cite the following work for which it has been developped

• G. Facchinetti, L. Lopez-Honorez, Y. Qin, A. Mesinger, 21cm signal sensitivity to dark matter decay [arXiv:2308.16656]

Installation

In order to install the code you can install it with pip running

pip install py21cmcast

In order to use and modify the code clone this repository and run

pip install -e .

in the main folder.

Quick start guide

Examples on

Ongoing work

To do list:

• rearrange the code in a self-contained package
• uniformely use astropy units throughout the entire code
• add docstrings to the classes

[^1]: Charlotte A. Mason, Julian B. Muñoz, Bradley Greig, Andrei Mesinger, and Jaehong Park, 21cmfish: Fisher-matrix framework for fast parameter forecasts from the cosmic 21-cm signal [arXiv:2212.09797]

[^2]: Andrei Mesinger, Steven Furlanetto, and Renyue Cen, 21cmFAST: A Fast, Semi-Numerical Simulation of the High-Redshift 21-cm Signal [arXiv:1003.3878]

[^3]: Andrei Mesinger and Steven Furlanetto, Efficient Simulations of Early Structure Formation and Reionization [arXiv:0704.0946]

[^4]: Jonathan C. Pober, Adrian Liu, Joshua S. Dillon, James E. Aguirre, Judd D. Bowman et al., What Next-Generation 21 cm Power Spectrum Measurements Can Teach Us About the Epoch of Reionization [arXiv:1310.7031]